Reduction gear



Jan. 2, '1923. 'LMFLB IVI. l. WACLAW.

REDUCTION GEAR.`

FRED FEB. 20, 1922.

/7 o l l /g if 11 MI e -21 s ,a3 v o o n o (i Z7" a/ I 21 i Patentedden.,L2,1923ikk i' .f

fr. f rica.

i flrriiafrriir.tenerme;orfenrnrnanrne;ruimsvrariuvrii.` y i y `r erinnerten Ganan,y i i z ippueanenvaiea February 2o, i922. {sei-n1No.vssaooa.y

Tonelli/whom 'may concerne' .v y y' spokes being secured. by "olts or equivalentA` i p Beit knowny thatI,`-MART1NJ. ,l/VACLAW, `means tothe rim 14C. y a citizeny of the United States, and a resi- Thepulley 1e lies with itsfriiii directly y `dent ofllethlehem, in the countyof Northf kwithin the turbine shafts 10 and lprovide.

- 5 ampton and State of Pennsylvania, have ina pairjotfparallel shaft sections 17 in asso- 55 vented anew and Improved'lv Reduction ciationwith each turbine shaft10, the shaft Gear, yofwhiclifthey followingfis a descrip- ,sections 17 offa pair alining and turning tion, y y, y` 'f 1in,bearings18on`the frame 13. `The tur- My inventiony relates-to` afpspeed-reducing bine sha-tts lOfare formed with zones 19 l0 means and particularly to fan electrofmag- `ot enlarged diameter at the flywheel 14 so y60 netic friction device it'or the purpose.v i y that, said enlarged Zones constitute rollers yThe inventionalthoughcapable otwider integral with the turbine shafts ,andturm use has particularly in yview the reduction ingabout the axes of the said turbine'shats oi speed ofsteam turbinesand iree'irom the `10 direc ly outside ,the periphery ofthe flydiiiiculties andobjectionsnecessarily inciv wheel.k Similarly, the shaft sections 17 par- 65 dent to toothed gearing systems which ordiy allelwith the shafts 10 are formed with iny narily yare used ,in connection with steam kiieixends 2O `of enlarged diameter to conturbines ,for reducing` the speed. ystitutey rollers integral with the yshafts 1,7

The stated object and ,others asfwill apanddisposed `at the interior vofthe rim 14 y l2O pear are attainedfbyatlywheel'advantage- Vof the `tlywheel and therefore disposed dil:'70

. ously kof thebuilt-up type and a setot magrectly radially inward fromy the exterior `netic rollers adapted to exert a reducing in-' rollersl).v l l n y iiuence on thenftlywheel at the rim thereof.` 'kTlie bearings 11 (are arranged in pairs leference is to be had to the accompany,v neareach end .of the .turbine shafts 10 and y 25iing drafwings'iorminga part of this speci'- thefbearings 18 forthe roller shaif'tsil be- .75

ication,l it beingy understood that the draw`` ing; similarly.disposedv in pairs adjacent to ingsare merely yillustrative of one example the bearings 11. Between thek end bearings of the invention; l' y *11, 18, and those bearings 11, y18 ,distant Figure 1 is a partly sectional; plan yView', from the endso'tv the shafts 10, 17,1 pro eo oi'ha reduction gear embodying,- my invend vide on the saidy shafts friction rollers 21, Se

tion; i 9,1a in `contact witheach other and v*keyed Figure is apartly sectional end elevaon the respective shafts lOand 17. To suhv tion, the view being taken asindicated by ject the 'flywheel lettoL electro-magnetic ac the line 2-2,ll`igjure 1. y, y tionfthrough the medium of thei'shatts l10,

,lt will be understood thatQalthoughctlie 17 l provide 'ma-gnetizing coils 22 on each S5 invention is shown as embodied in two sets shalt l() and magnetizi'ng'coils 22a adjacent ot rollers. in .association with high and low jte ythe coils 22 and disposed about the shafts pressure turbine shait'ts, it will readilyk be 17, the spools ott the saidc'oils 22, 22a being understood that in `units consisting of ,a suitably made rigid with the trame 12 and 40 single turbine only one'vsetyor rollers is re-py out of contact with*y the shafts, 10 and'17, 90

quired. y y A y kf n whereby slip-ringcommutatore and brushes ,In carrying out my invention in accordare made unnecesssary. y y i anceswith the illustrated example thedturln order to ktacilitate the placing of the bine shaftsV 10 turn Vin bearings "11 on an magnetizingcoils in position the loutboard elevated portion12 ot a base frame. 13. A rollers 21, 21a maybe held by semi-circular 95 pulley or, flywheeldesigiiated*generallybyy rvplates 23 engaging ingrooves machined in Athe numeral 111 4is provided on a shatty 15 the shaftsy 10 and 17er the bobbins of the turningin bearings 16.l Thellywheellt in ,magnetisaing coils may be made in hall secthe preferred ytorni is built up and comtioi'is' and assembled on the shafts and prises a hubleitfand spokes leb. thereon, "said Wound with wire.` `v will `be understood 100y and rollers 21, 21?t that the several bearings 11 and 18 are constructed of non-magnetic metal in order to confine the magnetic circuit to the shafts and their integral rollers and to the rim of the fiywheel. The shafts and rini, it being' understood, are made of steel having a good magnetic quality andthe maximum cross section is availed of Wherever possible to secure los7 fiuX density. The rim of the flywheel will be subiectedgrto the force re,- sulting from the magnetic attraction between the pole faces of the roller-Zones 19',`

20, said magnetic lines being through the shafts 10 with tlieirlroller shafts 19,' vthe shafts 17 and their :roller shafts 20, and thel formance; the reduction gear as described is `characterized by freedom from strains dueto error ofpitch and inertia of generator, the uf'holemaking for higher efiiciency and long-er service. l 4 f I would state in conclusion that While the illustrated example constitutes` a practical embodiment of myinvention, I do not limit myself; strictly tok the exact details herein `illustrated,since, manifestly, the ysame can be' considerably` varied Without departure fromthe spirit of the invention in .the appended claims.

Having' thus described my invention, l

as defined lclaim 1. A reduction gear of the class described,

:comprising a driven shaft, a. pulley carried oiiysaid shaft, a driving' shaft, a roller on said shaft in frictional contact with said pulley,niagnetic coils surrounding said shaft to increase the gripping action of the rollers with they pulley, a second shaft and a second magnetic coil 'surrounding said vsecondary shaft, said secondary shaft being also iii contact With said pulleyand driving shaft.

2. A. reduction gear of the class described, comprising av driving shaft, a friction roller on each end of said vdrivingv shaft, a second shaft parallel with the driving shaft, fric- "tion 'rollers on said second shaft in contact with said first-mentioned friction rollers, a driven pulleyv having` a rim extending between both of said shafts, rollers carried by both of lsaid shafts in contact with said rim for driving the ysaine, and magnetic means between the faction rollers land the driving rollers for 'producing a magnetic insides flux to increase thegripping action of the friction rollers.

8. rl. reduction `gear of the class described, comprising a Wheel presenting a substantially Wide rim, a driving,` shaft,` a pair of rollers on said shaft in contact with said rim and adapted to drive the saine, a friction roller adjacent each end of said driving shaft, a magnetic coil arranged between one of thefrictionrollers and one of the driving rollers, a secondary shaft, a plurality offrollers on said secondary shaft, certain of said rollers cont-acting With the inner surface of said rimand certain others with the frictional rollers mounted adjacent the end of the ,driving shaft, said secondary shaft being;` adapted to aid the' driving shaft to transmit its poiver tothe wheel.

1-. A driven element and reducing,- means therefor comprising an elongated'roller turning with saiddiiven element, magnetic coils on said elongated roller, a rim Wheel adjacent to and in frictional contact with said elongated roller, a co-axial shaft parallel with said driveiielement andy extending into' said rim, rollers on said yshaft and inagnetizing` coils on said driven element and on said, shaft. y

ln combination with a Wheel comprisd ingr a substantially Wide rim, a driving' shaft, a plurality of rollers and a magnetic coil mounted on said shaft,A a secondary shaft arranged adjacent the c riving shaft, rollers mounted on said secondary shaft, certain of said rollers mounted on the driving shaft beingin frictional contact with `the rim of said Wheel and certain others in frictional eontactwitlitlie rollers mounted on 'the secondary shaft, said magnetic coil producing a magnetic duX to increase the fric# tional grip kbetween the rollers on the driving shaft, the Wheel, and the rollers on the secy oiidaryl shaft. f

6. ln combination Wit-hf a driving shaft, a irictional roller carried. on said shaft ad jacent each end thereof, a pair of transmission rollers also 'carried on said shaft adjacent kits center, a coil'surrounding said shaft between Vone end roller and one of the intermediate rollei's, a secondary shaft, rollers on ysaid secondary shaftfin frictional Contact With the end rollers of the driving shaft, a pair of transmission 'rollers on said secondary shaft, a magnetic coil surrounding said secondary shaft and arranged between one end roller and one of the transmission rollers, and a driven-element disposed between said driving shaft and the secondary shaft frictionally and magnetically driven by said transmission rollers.`

7. ln a drive ofthe class described, a driving,` and a driven member, said driving' member comprising' plurality of frictional rollers and a plurality of transmission rollers, shaft inounting,` said rollers, said trans` mission rollers being 'in Contact "with seid driven member, e' Second shaft positioned adjacent seid driving Shaft, u plurality ofk rollers mounted on Saidfseoond'shefe and 5 in Contact 'with the rietionel rollerso'l the ary shaftk and in eontet with seid driven member, `sind e plurality of magneticy coilsv positioned on said shafts adjacent said rollers for megnetizing the shafts and rollers, thereby increasing the friotionel Contact between the driverend the driving members."

MARTIN J. VACLAW-- 

